FB2026_02 , released June 18, 2026
Aberration: Dmel\T(2;3)V21
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General Information
Symbol
T(2;3)V21
Species
D. melanogaster
Name
FlyBase ID
FBab0010281
Feature type
chromosomal_translocation
Also Known As
T(2;3)V21e
Computed Breakpoints include

h38R-h46;92B

Sequence coordinates
Member of large scale dataset(s)
Nature of Aberration
Cytological Order
Progenitor
P{bw+L}92C
(Sabl and Henikoff, 1996, Dreesen et al., 1991)
Mutagen
X ray
(Dreesen et al., 1991)
Class of aberration (relative to wild type)
chromosomal_translocation
(FlyBase, 2007)
Class of aberration (relative to progenitor)
chromosomal_translocation
(Dorer and Henikoff, 1997, Sabl and Henikoff, 1996)
chromosomal_inversion
(Dreesen et al., 1991)
Breakpoints

80-81;92C

(Dreesen et al., 1991)

h38R-h46;92B

(Dorer and Henikoff, 1997)
Causes alleles
Carries alleles
Transposon Insertions
P{bw+L}92C
(Dorer and Henikoff, 1994)
P{bw+L}V21
(Sabl and Henikoff, 1996)
Formalized genetic data

bk2 << p1:bk1

Genetic mapping information
Comments

Breakpoint(s) molecularly mapped

(Dreesen et al., 1991)
Comments on Cytology

Chromosome also carries P{bw+L}92C.

(Dorer and Henikoff, 1997)

Translocation that places 2R heterochromatin ~55-70kb from the P{bw+L} transposon.

(Sabl and Henikoff, 1996)

Limits of break 1 from polytene analysis (FBrf0086603) Limits of break 2 from polytene analysis (FBrf0099191)

Sequence Crossreferences
DDBJ / EMBL / GenBank
DNA sequence
Protein sequence
Gene Deletion and Duplication Data
Genes Deleted / Disrupted
Complementation Data
Completely deleted / disrupted
Partially deleted / disrupted
Molecular Data
Completely deleted
Partially deleted
Genes NOT Deleted / Disrupted
Complementation Data
 
Molecular Data
 
Genes Duplicated
Complementation Data
Completely duplicated
Partially duplicated
Molecular Data
Completely duplicated
Partially duplicated
Genes NOT Duplicated
Complementation Data
 
Molecular Data
 
Affected Genes Inferred by Location (0)
    If no genes are listed here, it may be because the affected region is very large. The JBrowse insert above may show an error for the same reason, and other FlyBase tools such as CytoSearch may also fail for large regions. You can contact FlyBase for more help.
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    Phenotypic Data
    In combination with other aberrations
    NOT in combination with other aberrations

    Selected on basis of variegating position-effect on bw+t8.4 in P{bw+L}92C. Position-effect was confirmed by mobilization of P{bw+L}92C to new sites with concomitant restoration of uniform pigmentation. Trans-inactivation was observed: T(2;3)V21 trans-inactivated P{bw+L}92C but had no detectable effect on any other ectopic bw+t8.4 or bw+t30 copy. Recessive lethal or semilethal. A derivative, 'V21ext', has the P element deleted.

    (Dreesen et al., 1991)
    Stocks (0)
    Notes on Origin
    Discoverer
     

    Induced on basis of trans-inactivation of P{bw+L}92C

    Balancer / Genotype Variants of the Aberration
    Separable Components
     
    Other Comments
     

    Rearrangement can suppress the variegation phenotype of P{lacW}92E and P{bw+L}92C in the same lines.

    (Dorer and Henikoff, 1997)

    Linkage analysis and mitotic chromosome preparations reveal this to be a translocation and not an inversion as previously thought.

    (Martin-Morris et al., 1993)
    Synonyms and Secondary IDs (4)
    Reported As
    Symbol Synonym
    In(3)V21
    T(2;3)V21
    T(2;3)V21e
    (Dorer and Henikoff, 1997, Dorer and Henikoff, 1994)
    T(2;3)V21e,P{bw+}v
    (Talbert et al., 1994)
    Name Synonyms
    Secondary FlyBase IDs
      References (9)